Free software development with the GPL is nice, but Apache 2.0 has been the
hot guy on the block for a while now.
Apache 2.0 is free software compatible, compatible with the GPLv3, and allows
linking to more libraries than GPL. It also allows changes to be published in
a different licence and integration with proprietary software if needed. It
also can be used with GPL code without the GPL "infecting it" and there is no
requirement to release the source code which many corporations like.
Overall, it is considered more "corporate friendly" than the GPL and even the
FSF recommends it for small projects over the GPL if the work is short. Heck,
it is recommended over BSD and MIT for its "legalize" in protection of
copyright and patents.
